Air abrasion hand piece



FIG. 1 is a perspective view of the air abrasion hand piece showing the new design;

FIG. 2 is a top view thereof, the hose and tip to which the sign is normally attached being shown in dashed lines for reference purposes only and forming no part of the claimed design;

FIG. 3 is a side view thereof, the hose to which the sign is normally attached being shown in dashed lines for reference purposes only and forming no part of the claimed design; and,

FIG. 4 is an end view thereof. 

The ornamental design for the air abrasion hand piece, as shown and described. 